Ni diffusion in the high-temperature intermetallics Ni<sub>3</sub>Sb studied by quasielastic neutron scattering
B Sepiol; O G Randl; C Karner; A Heiming; G Vogl; B Sepiol; Inst. fur Festkorperphys., Wien Univ., Austria; O G Randl; Inst. fur Festkorperphys., Wien Univ., Austria; C Karner; Inst. fur Festkorperphys., Wien Univ., Austria; A Heiming; Inst. fur Festkorperphys., Wien Univ., Austria; G Vogl; Inst. fur Festkorperphys., Wien Univ., Austria
Журнал:
Journal of Physics: Condensed Matter
Дата:
1994-02-07
Аннотация:
Nickel diffusion in the high-temperature phase of the intermetallic alloy Ni<sub>3</sub>Sb is extremely fast compared to diffusion in other intermetallics. We have studied quasielastic neutron scattering, which permits us to determine the elementary diffusion mechanism on an atomic scale. A model explaining diffusion by Ni jumps between the alpha - and gamma -Ni sublattices of the D0<sub>3</sub> (Fe<sub>3</sub>Si) structure has been tested and satisfactory agreement has been obtained.
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